After carrying my web application to windows server 2003 R2 from windowsXP - IIS 5.1, I have encountered a ASP.Net AJAX issue that my page is performing a full page postpage instead of a partial page postback of the expected AJAX page elements.

I have searched everywhere, and this is the only solution I can find.I just stumbled upon this page below and I applied what it is saying. I would like to thank to Neil kilbride for sharing this solution with us.

If you want to retrieve data(password ,UserID,DataSource,InitialCatalog) , you can use SqlConnectionStringBuilder (From .NET Framework 2.0, there is System.Data.Common.DbConnectionStringBuilder and its derived classes (SqlConnectionStringBuilder for SqlServer))